Waterproof tactile switches are electronic switching devices with waterproof capabilities. Typically, they consist of a base, metal spring, contacts, and sealing components.
Their core function relies on sealing structures (such as snap-in waterproof membranes or silicone O-rings) to block external water ingress. Some high-end models also feature water ingress monitoring systems (e.g., moisture-absorbing sponges paired with micro-humidity sensors) that detect internal humidity changes in real time and trigger alarms.